Animals 4 Antiprogestins Female 4 Mice 4 Mice, Inbred BALB C 4 Mifepristone 4 Receptors, Progesterone 4 Western blotting 4 animal experiment 4 animal model 4 animal tissue 4 article 4 breast carcinoma 4 cell proliferation 4 controlled study 4 female 4 mifepristone 4 mouse 4 nonhuman 4 priority journal 4 progesterone receptor 4 2 (2 amino 3 methoxyphenyl)chromone 2 AKT 2 Acquired hormone resistance 2 Bagg albino mouse 2 Blotting, Western 2 Breast cancer 2 Breast cancer treatment 2 Cell Proliferation 2 DNA 2